Stone-sawing machine.



No. 636,094. Patented Oct. 3|, I899. J. S. YOUNG. STONEISAWING MACHINE.

, (Application filed Nov. 2 1898.) (No Model.)

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PATENT JAMES SYLVESTER YOUNG, OF BARRE, VERMONT.

STONE-SAWING MACHINE.

$PECIFIGATION forming part of Letters Patent No. 636,094, dated October 31, 1899.

Application filed November 2 1898. Serial No. 695,308. (No model.)

T0 at whont it may concern.-

Be it known that I, JAMES SYLVESTER YOUNG, of South Barre,in the county of Washington and State of Vermont, have invented a new and Improved Stone-Sawing Machine, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved stone sawing machine which is simple and durable in construction and especially designed for sawing granite, marble, or other stone blocks used principally for monuments or the like, the machine being arranged to permit of cutting the block in such a manner that the center portions become detached as solid blocks for use as monuments or parts thereof or for other purposes, the machine also serving to make angular cuts on the block.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims. I

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional side elevation of the improvement on the line 1 1 in Fig. 2. Fig. 2 is a plan view of the same with part in section. Fig. 3 is a transverse section of the same on the line 3 3 in Fig. 1. Fig. 4is a like view of the improvement as arranged for making angular cuts, and Fig. 5 is a plan view of a stone block partly cut by the machine.

The improved stone-sawing machine is provided with a frame A, preferably made rectangular, as shown in the drawings, and hung on chains B, connected with a suitable support adapted to be raised or lowered to allow the saw-blades to cut into the stone block and to permit of raising the blades out of en gagement with the block or slabs after the stone is sawed.

On the frame A are clamped or otherwise secured some of a series of longitudinally-extending supporting-beams O O O 0 placed a suitable distance apart and each carrying a series of vertically-extending saw-blades D, adapted to be adjusted vertically in the beams and fastened in place thereon after the desired adjustmefit is made by suitable setscrews E. Eachof the supporting-beams O O C (J is made in two parts, between which the blades are held, the two parts being spaced apart by blocks F, through which pass bolts F, serving to fasten the. parts of the beams and the blocks solidly together, spaces being afforded between the blocks and the parts of the beams for the passage of the saw-blades D, as will be readily understood by reference to the drawings.

The ends of each supporting-beam C C C O are formed with longitudinally-extending trunnions G, journaled in bearings formed in blocks H, preferably made of steel, said trunnions being secured in place on the bearings by bolts or set-screws I, as plainly indicated at the right in Fig. 1. In each block H is journaled a grooved roller H, and the several rollers at each end of the frame are mounted to travel on a transversely-extending guide-bar J, extending through the corresponding blocks H, adapted to be fastened to the bar by set-screws K. When the setscrews K are loosened, the blocks, with their supporting-beams and saw-blades, can be readily shifted transversely on the bars to bring the beams the desired distance apart, according to the thickness of the slabs to be cut. Furthermore, when the set-screws are loosened the blocks are free to travel transversely'on the bars J, and this is necessary when making angular cuts, asillus'trated in Fig. 4 and hereinafter more fully explained. One of the bars J is engaged by'a pitman L or other suitable device for imparting the usual reciprocating motion to the frame.

Now it is evident by the arrangement described that the sawblades in the several supporting-beams cut the stone block when a reciprocating motion is given to the frame, and as the cutsincrease in depth and the bottoms of the beams come near to the face of the stone then the reciprocating motion is temporarily interrupted and the set-screws E are loosened to adjust the beams higher up on the saw-blades D, which latter remain in the cuts in the block. The set-screws E are then again screwed up to fasten the sawblades and supports together and a reciprocating motion is then again given to the frame to cause the blades to cut deeper lnto the stone.

By having the blades of a height, say, of five or six feet I am enabled to readily cut stone blocks of a corresponding height.

WVhen it is desired to cut a stone block N (see Fig. 5) for the hollow base of a monument, for instance, then the end saw-blades in the middle supports 0 C are removed, so that upon reciprocation of the frame the middle cuts N are of less length than the side cuts N When the block N has been cut through to the bottom and the frame has been lifted to bring the blades out of engagement with the cuts, then the stone block Nis given a quarter-turn and the above-described operation is repeated, only with a shorter stroke given to the frame and with the middle beams C C set a distance apart to bring their saw-blades to the ends of the cuts N and with the outer beams C O adjusted to bring their saw-blades to the ends of the cuts N The saw-blades will now make the cuts N N and when the blades have finally cut to the bottom of the block three pieces are formed, of which the inner one can be readilylifted out to leave the outer one in the form of a hollow base of a monument. The next piece is likewise in the shape of a hollow base, only smaller than the outer one, and the middle piece is a solid trimmed block, Which can be used for various purposes.

In sawing a block in the manner described it is necessary to drill holes I 5 in the block previously to sawing, for the terminals of the cut made by the saw-blades, to prevent injury to the saw-blades and to readily set or adjust the supporting-beams to bring their saw-blades in the proper position.

When it is desired to make angular cuts N in a block N as shown in Fig. 4., for instance, then two supporting-beams O O, with their saw-blades D, are employed, and the setscrews K are loosened to permit free transverse travel of the supporting-beams in the direction of the arrows a b as the cuts deepen, it being understood that the beams, with their saw-blades, are set to the desired angle to be given to the cuts N by turning the beams, with their trunnions, in the blocks H, accordingly, and then fastening the trunnions in place by the set-screws I.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. A stone-sawing machine, comprising a frame, a plurality of saw-beams pivoted at their ends to rock and each carrying a plurality of alined saws and movable bodily transversely, and means for locking the beams in position, substantially as described.

2. A stone-sawing machine, comprising a frame, transversely-movable supports, a plurality of beams pivoted at their ends in the supports, a plurality of saws adjustably secured in each beam, and means for locking the said supports in position, substantially as described.

3. A stone-sawing machine, comprising a frame, blocks at each end of the frame and mounted to travel transversely, said blocks being provided with bearings, a plurality of saw-beams each provided with trunnions at its ends fitting in the bearings of the said blocks, and means for locking the blocks in position, substantially as described.

4. A stone-sawing machine, provided with a reciprocating support, saw-beams carried by the support and each having trunnions at its ends, blocks in which the trunnions are journaled, means for adjustably securing the trunnions to the blocks, and guide-bars on which the blocks are mounted to travel in a direction transverse to the reciprocating movement of the support, substantially as shown and described.

5. A stone sawing machine, a series of spaced saw-blade supports, a plurality of sawblades arranged in alinement with each other in each of said supports and in alinement with the direction of movement given to the said saw-blade supports, means, substantially as described, for fastening said blades in position on the supports after their vertical adjustment, blocks in which the ends of said supports are mounted to turn, and bars engaging the blocks at the ends of the supports, said bars and blocks being adapted to be adjustably fastened together, as set forth.

6. In a stone-sawing machine, a series of saw-supporting beams, provided with trunnions at their ends, blocks in which the trunnions of the saw-beams are mounted, a roller mounted in each block, guide-bars on which the said rollers are adapted to travel, and means for locking the blocks to the said bars, substantially as described.

7. A stone-sawing machine, comprising a reciprocating frame, a plurality of saw-beams each provided with trunnions at its ends, blocks in which the trunnions of the beams are mounted, means for adjustably securing the trunnions in said blocks, transverse guidebars on which the blocks are mounted to travel, and means for locking the blocks to the said guide-bars, substantially as described.

JAMES SYLVESTER YOUNG.

IVitnesses:

M. H. YOUNG, MARY PRICE. 

